It was at a local popstage with a capacity for roughly 300 people, rather small but very cozy.
She managed to perform for roughly 3 hours, but she toldt us that the audience gave her a lot of energy so she could go on for a very long time.
(Keep in mind that Kotoko sells out stadiums.)

I mean I didn't expect much, but their voices are almost unreal when you see them live. I was way up front, and they were not lip syncing or anything like that, and they hit some notes I was actually floored by.